We present images of comet C/1995 O1 Hale-Bopp in the millimeter-wave
emission of the neutral gases HCN and CS. The data were obtained between
October, 1996, and June, 1997, using the 15-element QUARRY focal plane
array on the Five College Radio Astronomy Observatory (FCRAO) 14-m
telescope. This observing campaign represents the first long-term
cometary molecular mapping program, and concentrates on the HCN J=1-0
rotational transition, along with CS J=2-1 during the months
surrounding the comet's perihelion passage. Significant, time-variable
asymmetries are visible in the maps, and when both HCN and CS were
mapped close in time to one another, asymmetries and elongations are
correlated in the two molecular line images. Preliminary modelling
suggests the observed asymmetries can be accounted for by anisotropic
emission of gas from the nucleus, with perhaps 25-50% of the emission
occuring in ``jets.''